Transcript Engineering in Panama: Kuna Nega Water Infrastructure

Engineering in Panama: Kuna Nega Water
Infrastructure Improvements
Pitt Humanities, Engineering and Design Club (Spring 2014)
Project Manager: Blaise Bucha
Construction Managers: Neal Daley, Jesse Newman-Evans, Mike Poole
Structural Team: Caleb Angle, Mike Barnes, Phil Karanovich
Water Distribution System
Pressure and Flow Analysis Through EPANET
• Open source software package for hydraulic simulation of water distribution networks
• Used to determine impact of system improvements on system pressure
Water Resources Team: Julie Shearer, Matthew Weschler
Geotechnical Team: Nikil Grama, Chris Mautino, Kathleen Staub
Overview
•
Water Storage Tank Design
Project Background: The Panama
City water main that supplies
Kuna Nega is periodically shut off
for up to 36 hours. The existing
10,000 gallon storage tank can
only provide backup supply for 10
hours. Part of the community
that lies at a higher elevation
than the existing tank receives no
pressure when the Panama City
water main is shut off.
Project summary:
• Creation of a high pressure zone and design of a
future 10,000 gallon tank at the highest point in the
community to supply water to the area not serviced
by the existing tank
• Continued construction of a 25,000 gallon storage
tank to supplement the existing tank
• Installation and replacement of valves to improve
system efficiency and simplify maintenance
• Construction of a garbage shed foundation for the
Kuna Nega school
Lot 41
No. 1 Tank Design Revisions
•
•
•
Lot 41 Water Storage Tank
Review initial designs
Compare designs to existing structure in Panama
Monitor construction of structural components
while on site to ensure proper installation
Lot 1
School
Tank
Lot 41 tank elevation view
No. 1 tank, section A-A
Pre-implementation when Panama main line is shut off
Post-implementation when Panama main line is shut off
Design Implementation
Results
• Installed submersible pump in the school
tank to pressurize High Pressure Zone
• Connected Panama City water main to Lot 1
• High Pressure Zone pressurized
during periods when the Panama
City water main is shut off
• Connected police station storage tank to
distribution system
• Entire community pressurized
according to EPANET model
• Installed: 700 feet of PVC pipe, 8 ball valves,
4 check valves and 4 air release valves
• Lot 41 Tank design to be
implemented next semester
Police Tank
Garbage Shed
Panama City
Water Main
Supply
Yard
High Pressure Zone
Stream
No. 1 Tank
Lot 41 wall detail
Lot 41 Tank Design Specifications:
•
•
•
Location of projects in Kuna Nega
Garbage Shed Foundation Design
Construction of tank No. 1, taken 03-22-14
To complete the projects,
the team had 7 working
days and worked 8-12
hours each day. The team
worked simultaneously
on several projects; some
were standalone, while
others affected the
overall project critical
path. As tasks were
completed, labor was
often shifted to ensure
completion of the
highest priority projects,
listed below:
• Kuna Nega school previously stored
refuse in hallways
• To improve cleanliness and reduce
odor, an offsite storage area was
required.
HEAD (FT)
0
20
40
60
FLOW RATE (GPM)
80
100
LIBERTY PUMPS FL150
LIBERTY PUMPS FL100
LIBERTY PUMPS FL200
Pump
Flow rate (gpm)
Operating Head (ft)
Total head loss (ft)
Shut off head (ft)
3D rendering of garbage shed footer
Results
System Curve
System and
pump curves
with operating
characteristics
Design Objectives
• Produce initial contour map of the
hillside.
• Displace 100 cubic feet of soil to level
the work site.
• Improve Slope Stability factor of safety
from 1.19 to 1.46.
• Analyze design of foundation
140
120
100
80
60
40
20
0
Liberty FL150
41
82
8
110
School tank piping diagram
• This will give the school 700 cubic feet
of garbage storage.
• This will reduce the amount of litter in
the village and improve the quality of
living.
• Foundation design is adequate
• CMU block construction is preferred by the local labor
• A square tank is more constructible than a circular tank
when using CMU block
Schedule
Rationale
Unexpected valve challenge
Square tank with 12’x12’ inner dimensions
Actual storage capacity of 11,500 gallons
Composite tank with concrete masonry walls
• Lot 1 Connection
• Police Tank Repair
• High Pressure Zone
• No. 1 Tank
Section view of forces on retaining wall and slab
Gantt chart of work completed 2-6-2014 to 2-14-2014
• Garbage Shed